How to delete the duplication part in a string

[ad]

I have a string like

string myString="dog,c at,dog,tiger"
I want to delete the duplication part, and make myString to "dog,cat,ti ger"

How can I do that?

[clintonG]

Use the InStr and Replace methods.
<%= Clinton Gallagher
METROmilwaukee (sm) "A Regional Information Service"
NET csgallagher AT metromilwaukee. com
URL http://metromilwaukee.com/
URL http://clintongallagher.metromilwaukee.com/


"ad" <[e-mail] u.tw> wrote in message
news:Os******** *****@TK2MSFTNG P15.phx.gbl...

I have a string like

string myString="dog,c at,dog,tiger"
I want to delete the duplication part, and make myString to
"dog,cat,ti ger"

How can I do that?

[Nicholas Paldino [.NET/C# MVP]]

ad,

First, you need to create a hashtable (or dictionary, I'll use a
hashtable since I don't know if you have access to .NET 1.1).

// Create the hashtable. If you want case-insensitivity, then you have to
use
// an overload of the constructor that takes the appropriate
case-insensitive
// comparer.
Hashtable parts = new Hashtable()

// Cycle through the parts.
foreach (string part in myString.Split( new char[1]{','}))
{
// If the part exists in the hashtable, don't add it.
if (!parts.Contain sKey(part))
{
// Add the part.
parts.Add(part, true);
}
}

// Now cycle through the parts and re-create the string.
// The builder for the new string.
StringBuilder builder = new StringBuilder() ;

// Cycle through the keys.
foreach (string key in parts.Keys)
{
// Append to the string builder.
parts.AddFormat ("{0},", key);
}

// Remove the last comma.
if (parts.Count > 0) then
{
// Remove the last comma.
parts.Remove(bu ilder.Length - 1, 1);
}

// The string.
myString = builder.ToStrin g();

I didn't run this, so make sure you test it first.

Hope this helps.
--
- Nicholas Paldino [.NET/C# MVP]
- mv*@spam.guard. caspershouse.co m

"ad" <[e-mail] u.tw> wrote in message
news:Os******** *****@TK2MSFTNG P15.phx.gbl...

I have a string like

string myString="dog,c at,dog,tiger"
I want to delete the duplication part, and make myString to
"dog,cat,ti ger"

How can I do that?

[ad]

Hi,
Could you give me some code?

"clintonG" <cs*********@RE MOVETHISTEXTmet romilwaukee.com > ¼¶¼g©ó¶l¥ó·s»D: eS************* *@TK2MSFTNGP14. phx.gbl...

Use the InStr and Replace methods.
<%= Clinton Gallagher
METROmilwaukee (sm) "A Regional Information Service"
NET csgallagher AT metromilwaukee. com
URL http://metromilwaukee.com/
URL http://clintongallagher.metromilwaukee.com/


"ad" <[e-mail] u.tw> wrote in message
news:Os******** *****@TK2MSFTNG P15.phx.gbl...

I have a string like

string myString="dog,c at,dog,tiger"
I want to delete the duplication part, and make myString to
"dog,cat,ti ger"

How can I do that?

[ad]

Thanks,
You do me a great favor!
"Nicholas Paldino [.NET/C# MVP]" <mv*@spam.guard .caspershouse.c om> ¼¶¼g©ó¶l¥ó·s»D: %2************* **@TK2MSFTNGP15 .phx.gbl...

ad,

First, you need to create a hashtable (or dictionary, I'll use a
hashtable since I don't know if you have access to .NET 1.1).

// Create the hashtable. If you want case-insensitivity, then you have to
use
// an overload of the constructor that takes the appropriate
case-insensitive
// comparer.
Hashtable parts = new Hashtable()

// Cycle through the parts.
foreach (string part in myString.Split( new char[1]{','}))
{
// If the part exists in the hashtable, don't add it.
if (!parts.Contain sKey(part))
{
// Add the part.
parts.Add(part, true);
}
}

// Now cycle through the parts and re-create the string.
// The builder for the new string.
StringBuilder builder = new StringBuilder() ;

// Cycle through the keys.
foreach (string key in parts.Keys)
{
// Append to the string builder.
parts.AddFormat ("{0},", key);
}

// Remove the last comma.
if (parts.Count > 0) then
{
// Remove the last comma.
parts.Remove(bu ilder.Length - 1, 1);
}

// The string.
myString = builder.ToStrin g();

I didn't run this, so make sure you test it first.

Hope this helps.
--
- Nicholas Paldino [.NET/C# MVP]
- mv*@spam.guard. caspershouse.co m

"ad" <[e-mail] u.tw> wrote in message
news:Os******** *****@TK2MSFTNG P15.phx.gbl...

I have a string like

string myString="dog,c at,dog,tiger"
I want to delete the duplication part, and make myString to
"dog,cat,ti ger"

How can I do that?

[clintonG]

That's a lot of code for what I presumed InStr and Replace methods could do
in a couple of lines of code.
Any comments about my sugesstion Nicholas?

<%= Clinton Gallagher

"Nicholas Paldino [.NET/C# MVP]" <mv*@spam.guard .caspershouse.c om> wrote in
message news:%2******** *******@TK2MSFT NGP15.phx.gbl.. .

ad,

First, you need to create a hashtable (or dictionary, I'll use a
hashtable since I don't know if you have access to .NET 1.1).

// Create the hashtable. If you want case-insensitivity, then you have to
use
// an overload of the constructor that takes the appropriate
case-insensitive
// comparer.
Hashtable parts = new Hashtable()

// Cycle through the parts.
foreach (string part in myString.Split( new char[1]{','}))
{
// If the part exists in the hashtable, don't add it.
if (!parts.Contain sKey(part))
{
// Add the part.
parts.Add(part, true);
}
}

// Now cycle through the parts and re-create the string.
// The builder for the new string.
StringBuilder builder = new StringBuilder() ;

// Cycle through the keys.
foreach (string key in parts.Keys)
{
// Append to the string builder.
parts.AddFormat ("{0},", key);
}

// Remove the last comma.
if (parts.Count > 0) then
{
// Remove the last comma.
parts.Remove(bu ilder.Length - 1, 1);
}

// The string.
myString = builder.ToStrin g();

I didn't run this, so make sure you test it first.

Hope this helps.
--
- Nicholas Paldino [.NET/C# MVP]
- mv*@spam.guard. caspershouse.co m

"ad" <[e-mail] u.tw> wrote in message
news:Os******** *****@TK2MSFTNG P15.phx.gbl...

I have a string like

string myString="dog,c at,dog,tiger"
I want to delete the duplication part, and make myString to
"dog,cat,ti ger"

How can I do that?